My rant about placements matchmaking

So I did 9 placements games. I was S2 in S6 and guess what: I won 2 lost 7! Like wtf?!

from those losses I played 1 match rlly bad. 1 was autofill trigger (._.) and I go 9/1à sup veigar but my team just sucks (no offense) and jungler never ganked...

How the actual **** can me a decent player end up with such a winrate vs equal opponents? Does Riot want me to be B5? Or am I just getting B5s all the time?

I'm not saying my teammates are all so bad, or that I'm good, but this is just damn unfair to be dragged down this hard in my placements ._.

Life sucks damn hard :( will let you know what rank I am.

edit: Oh Flex Q and solo/duo are different ranked ladders, I might still get that Silver 2 rank back :P